if (expression) statement1 else if (expression) statement2 else if (expression) statement3 else if (expression) statement4 else statement5//处理一些意外情况,错误检验,可以省略不写。 3.2、Switch 类似于else-if选择语句,区别在于选择条件表达的取值不同 语法表示如下: switch (expression) //表达式必须...
switch( i ) {case-1: n++;break;case0: z++;break;case1: p++;break; } In this example, abreakstatement follows each statement of theswitchbody. Thebreakstatement forces an exit from the statement body after one statement is executed. Ifiis equal to -1, onlynis incremented. Thebreakfoll...
nocasematch is found, none of the statements in theswitchbody get executed. There can be at most onedefaultstatement. Thedefaultstatement doesn't have to come at the end. It may appear anywhere in the body of theswitchstatement. Acaseordefaultlabel can only appear inside aswitchstatement. ...
A case or default label can only appear inside a switch statement.The type of switch expression and case constant-expression must be integral. The value of each case constant-expression must be unique within the statement body.The case and default labels of the switch statement body are ...
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come right come sono i fiammifer come to a halt come to and endfinish come to daddy come to naught come to pieces come to where i am come under starters o come up on differents come up to come up with oranges come upon the heels o come visit me come with come with me in the ...
if (a) { int32_t c, d; /* OK, c and d are in if-statement scope */ c = foo(); int32_t e; /* Wrong, there was already executable statement inside block */ } 用星号声明指针变量与类型对齐 /* OK */ char* a; /* Wrong */ ...
If we do not use thebreakstatement, all statements after the matching label are also executed. Thedefaultclause inside theswitchstatement is optional. switch Statement Flowchart switch Statement Flowchart Example: Simple Calculator // Program to create a simple calculator#include<stdio.h>intmain(){ch...
Crum, when I removed the "int x = 0;" in switch_utils.c line I got this in an if statement, and "x" is used in if, for, etc, examples: if (*p == '\n') { x++; if (x == 2) { src/switch_utils.c:147:3: error: use of undeclared identifier 'x' x++; ^ ...
There are some restrictions on the use of these switch cases. First of all, the switch expression is required to have the data type char or integer. The value of each case should be used inside of the switch case statement and its data type must be an integer or const char (constant ...